121640063 has 8 divisors (see below), whose sum is σ = 125813376. Its totient is φ = 117482400.

The previous prime is 121640047. The next prime is 121640081. The reversal of 121640063 is 360046121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121640063 - 2⁴ = 121640047 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121640003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13145 + ... + 20397.

It is an arithmetic number, because the mean of its divisors is an integer number (15726672).

Almost surely, 2^121640063 is an apocalyptic number.

121640063 is a deficient number, since it is larger than the sum of its proper divisors (4173313).

121640063 is an equidigital number, since it uses as much as digits as its factorization.

121640063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 121640063 is about 11029.0553992624. The cubic root of 121640063 is about 495.4793343457.

Adding to 121640063 its reverse (360046121), we get a palindrome (481686184).

The spelling of 121640063 in words is "one hundred twenty-one million, six hundred forty thousand, sixty-three".